refactor: drop usage of target_proxy_name label for glb
What
- Filter metrics by the
url_map_name
instead oftarget_proxy_name
.
Why
- targetProxyName used to default to loadBalancerName which is incorrect since those are 2 different resources.
- The same metric can be filtered by the
url_map_name
so this makes the service definition simpler because we have 1 less parameter.